NOW, SIT UP: Jeff Brinker (left) and Hongyou Fan observe satisfactory fluorescence by their well-trained nanocrystals in water solution. The dark vial holds gold nanocrystals; the orange and green are semiconductor nanocrystals. (Photo by Randy Montoya)
Top image: ordered gold nanocrystal packed inside silica. Electron diffraction pattern (left corner image) and high-resolution image (right corner) confirmed the nanostructure and gold nanocrystals. Bottom image: self-assembled, well-shaped gold nanocrystal/silica arrays.
Possible uses include biological labeling, laser light, catalysts, memory storage, and relief for physicists
A wish list for nanotechnologists might consist of a simple, inexpensive means - actually, any means at all - of self-assembling nanocrystals into robust orderly arrangements, like soup cans on a shelf or bricks in a wall, each separated from the next by an insulating layer of silicon dioxide.
The silica casing could be linked to compatible semiconductor devices. The trapped nanocrystals might function as a laser, their frequency dependent on their size, or as a very fine catalyst with unusually large surface area, or perhaps a memory device tunable by particle size and composition.
Neal Singer | Sandia!
Gluing with the Laser
30.06.2015 | Laser Zentrum Hannover e.V.
Innovative Modular Process Makes Plastic Film Coating Highly Efficient
09.06.2015 | Fraunhofer-Institut für Organische Elektronik, Elektronenstrahl- und Plasmatechnik FEP
New technique combines electron microscopy and synchrotron X-rays to track chemical reactions under real operating conditions
A new technique pioneered at the U.S. Department of Energy's Brookhaven National Laboratory reveals atomic-scale changes during catalytic reactions in real...
Think of an object made of iron: An I-beam, a car frame, a nail. Now imagine that half of the iron in that object owes its existence to bacteria living two and a half billion years ago.
Think of an object made of iron: An I-beam, a car frame, a nail. Now imagine that half of the iron in that object owes its existence to bacteria living two and...
A team of scientists including PhD student Friedrich Schuler from the Laboratory of MEMS Applications at the Department of Microsystems Engineering (IMTEK) of...
The three-year clinical trial results of the retinal implant popularly known as the "bionic eye," have proven the long-term efficacy, safety and reliability of...
On June 23, the second Sentinel mission was launched from the space mission launch center in Kourou. A critical component of Aachen is on board. Researchers at the Fraunhofer Institute for Laser Technology ILT and Tesat-Spacecom have jointly developed the know-how for space-qualified laser components. For the Sentinel mission the diode laser pump module of the Laser Communication Terminal LCT was planned and constructed in Aachen in cooperation with the manufacturer of the LCT, Tesat-Spacecom, and the Ferdinand Braun Institute.
After eight years of preparation, in the early morning of June 23 the time had come: in Kourou in French Guiana, the European Space Agency launched the...
25.06.2015 | Event News
16.06.2015 | Event News
11.06.2015 | Event News
01.07.2015 | Press release
01.07.2015 | Awards Funding
01.07.2015 | Physics and Astronomy